POPS and mini SASP Miniaturized instruments for aerosol

POPS and mini. SASP: Miniaturized instruments for aerosol particle sizing and aerosol optical depth measurements Ru-Shan Gao NOAA OAR/ESRL/CSD rushan. gao@noaa. gov July 27, 2016 NOAA Emerging Technologies Workshop

POPS and mini. SASP Emerging Technologies ● Capability Name: POPS and mini. SASP ● Capability Developer: NOAA/OAR/ESRL/CSD ● Partnerships in Development: NOAA/OAR/PMEL, CIRES (Univ. of Colorado) ● Capability Brief Description/Status: o POPS – Printed Optical Particle Spectrometer Ø measures (counts and sizes) ambient aerosol particles in the range of 140 – 3000 nm diameter o mini. SASP – miniature Scanning Aerosol Sun Photometer Ø measures aerosol optical density at four wavelengths (460, 550, 670, 860 nm) o Both instruments are at TRL 8 As presented at the 2016 NOAA Emerging Technologies Workshop 2

POPS and mini. SASP Emerging Technologies ● Key capability distinguishing innovation: Both instruments represent approximately one order of magnitude decrease in size, weight, and cost over existing commercial products, allowing them to be deployed on small UASs and weather balloons ● Early Successes o Development and flight testing of both instruments was facilitated by an OAR SEED grant (2013 -14) o Initial science flights were on the PMEL Manta UAS in April 2015 in Svalbard, Norway, yielding valuable scientific data o Multiple POPSs were flown on weather balloons into the Asian summer monsoon anticyclone in August 2015, producing a breakthrough dataset As presented at the 2016 NOAA Emerging Technologies Workshop 3

POPS and mini. SASP Emerging Technologies ● Anticipated impacts: ○ Improve climate science and climate prediction ○ Fill gaps in prediction of volcanic ash plume evolution (aviation weather) and climate mitigation ○ These instruments are anticipated to provide high-quality information regarding aerosol distribution and hygroscopic growth factors, aerosol radiative effect ○ Both instruments are small, light, and inexpensive enough to be widely deployable to provide unprecedented temporal and spatial coverage ○ Measurements using these instruments will help to improve Ø representation of aerosols in climate models for climate analysis and prediction Ø understanding of climate mitigation Ø safety of aviation following volcanic eruptions Ø satellite aerosol data retrieval As presented at the 2016 NOAA Emerging Technologies Workshop 4

POPS and mini. SASP Emerging Technologies ● Additional Information: o Murphy, D. M. , et al. , A miniature scanning sun photometer for vertical profiles and mobile platforms, Aerosol Science and Technology, 50(1), doi: 10. 1080/02786826. 2015. 1121200, 2016. o Gao, R. S. , et al. , A light-weight, high-sensitivity particle spectrometer for PM 2. 5 aerosol measurements, Aerosol Science and Technology, 50(1), 88 -99, doi: 10. 1080/02786826. 2015. 1131809, 2016. As presented at the 2016 NOAA Emerging Technologies Workshop 5